As I've understood it, it's mandatory to go and make some art doing the COVID-19 outbreak and quarantine. So that's what I did:

I recorded a cover version of Heart of Stone by Europe (from the The Final Countdown album) and created a video for it using Fusion.
I've made elaborate use of the WSL Audio modifier to drive all kinds of animation.

I've used elements from Action VFX for the flames.

I hope you enjoy it. After it had been uploaded it took about 10 minutes for the Youtube copyright claim to arrive.

That's a seriously cool set-up you got there Milo. I only have a DAW, since I don't know how to play anything longer than 2 bars and even then I have to dive into the midi-sheet to quantize and correct.

But to answer your question: Fusion works either with *.wav files through the WSL Audio modifier or with the midi-extractor modifier, which reads a midi-file and uses the info to drive parameters. No realtime unfortunately.